Across
1
Line crossing from corner to corner
2
Result of multiplication
3
The number representing nothing
6
Middle value in an ordered dataset
7
Rectangular array of numbers
8
Repeated addition
Down
2
Closed shape with straight sides
4
Distance from center to edge of circle
5
Space between two intersecting lines
9
Number greater than zero
10
Symbol representing unknown value
11
Mathematical rule or equation
12
Part of a circle's circumference